getting the ID of a certain Parameter from the Live API

I'm browsing the API documetatin for some time now, but can't find any examples if there is an easy way to get an ID of a certain parameter in a device (inside the device)…
As the code will be inside the device, it should be the "live.path" object with an argument i guess like "live.path this_device parameters ???" but don't know if there is any direct reference i can get to an automatable parameter somehow (not with mouseclick, i can do that)…

am i missing something, or ???

thx in advance for any help,
Kevin

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Thanx Broc, i see your example and understand but how i will know the parameter number? :) If i know the parameter number then certainly i can get the ID, but what if there is a certain knob in the device i want to get the ID of? How i can refer to that? how i can get what parameter number it is in the device? Also, is the parameter numbers dynamic (like the IDs) or the parameter number is always the same in a device?